Coil



FIG. 1 is a front view of a coil;

FIG. 2 is a top view thereof;

FIG. 3 is a right-side view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a cross-sectional view thereof taken along lines 7-7 in FIG. 1. 

CLAIM The ornamental design for a coil, as shown and described. 